The caddy accepts all keyfitⓇ and fit2Ⓡ infant car seats with easy click in attachment offering all the convenience of a travel system without the added weight of a stroller seat at only eleven pounds the keyfitⓇ caddy is a breeze to maneuver with front swivels all wheel suspension and toe tap locking rear brakes. I put to her the keyfit caddy infant car seat carrier which is also a stroller for infants that uses the car seat basically your first stroller to bring your newborn out in for my review it. Details designed exclusively for the keyfit caddy infant car seat the chicco keyfit lightweight aluminum infant car seat carrier stroller is the lightweight solution for the key fit parent on those days when a full size stroller is just more than you need. The keyfit caddy stroller frame is only designed to accept the chicco keyfit keyfit 30 or fit2 car seat it will not accept a car seat manufactured by another pany it will not accept a car seat manufactured by another pany. Designed exclusively for the 1 rated keyfit infant car seat the keyfit caddy stroller is a perfect addition to a chicco baby gear collection this lightweight car seat carrier was created to supplement a full feature travel system for a lighter more pact option on those especially busy days.